src/layers.cpp

   1 /*
   2  * Copyright (c) 2017 TOYOTA MOTOR CORPORATION
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <regex>
  18
  19 #include "layers.hpp"
  20 #include "json_helper.hpp"
  21 #include "hmi-debug.h"
  22
  23 namespace wm
  24 {
  25
  26 using json = nlohmann::json;
  27
  28 layer::layer(nlohmann::json const &j)
  29 {
  30     this->role = j["role"];
  31     this->name = j["name"];
  32     this->layer_id = j["layer_id"];
  33
  34     // Init flag of normal layout only
  35     this->is_normal_layout_only = true;
  36
  37     auto split_layouts = j.find("split_layouts");
  38     if (split_layouts != j.end())
  39     {
  40
  41         // Clear flag of normal layout only
  42         this->is_normal_layout_only = false;
  43
  44         auto &sls = j["split_layouts"];
  45         // this->layouts.reserve(sls.size());
  46         std::transform(std::cbegin(sls), std::cend(sls),
  47                        std::back_inserter(this->layouts), [this](json const &sl) {
  48                            struct split_layout l
  49                            {
  50                                sl["name"], sl["main_match"], sl["sub_match"]
  51                            };
  52                            HMI_DEBUG("wm",
  53                                      "layer %d add split_layout \"%s\" (main: \"%s\") (sub: "
  54                                      "\"%s\")",
  55                                      this->layer_id,
  56                                      l.name.c_str(), l.main_match.c_str(),
  57                                      l.sub_match.c_str());
  58                            return l;
  59                        });
  60     }
  61     HMI_DEBUG("wm", "layer_id:%d is_normal_layout_only:%d\n",
  62               this->layer_id, this->is_normal_layout_only);
  63 }
  64
  65 struct result<struct layer_map> to_layer_map(nlohmann::json const &j)
  66 {
  67     try
  68     {
  69         layer_map stl{};
  70         auto m = j["mappings"];
  71
  72         std::transform(std::cbegin(m), std::cend(m),
  73                        std::inserter(stl.mapping, stl.mapping.end()),
  74                        [](nlohmann::json const &j) {
  75                            return std::pair<int, struct layer>(
  76                                j.value("layer_id", -1), layer(j));
  77                        });
  78
  79         // TODO: add sanity checks here?
  80         // * check for double IDs
  81         // * check for double names/roles
  82
  83         stl.layers.reserve(m.size());
  84         std::transform(std::cbegin(stl.mapping), std::cend(stl.mapping),
  85                        std::back_inserter(stl.layers),
  86                        [&stl](std::pair<int, struct layer> const &k) {
  87                            stl.roles.emplace_back(
  88                                std::make_pair(k.second.role, k.second.layer_id));
  89                            return unsigned(k.second.layer_id);
  90                        });
  91
  92         std::sort(stl.layers.begin(), stl.layers.end());
  93
  94         for (auto i : stl.mapping)
  95         {
  96             if (i.second.name.empty())
  97             {
  98                 return Err<struct layer_map>("Found mapping w/o name");
  99             }
 100             if (i.second.layer_id == -1)
 101             {
 102                 return Err<struct layer_map>("Found invalid/unset IDs in mapping");
 103             }
 104         }
 105
 106         auto msi = j.find("main_surface");
 107         if (msi != j.end())
 108         {
 109             stl.main_surface_name = msi->value("surface_role", "");
 110             stl.main_surface = -1;
 111         }
 112
 113         return Ok(stl);
 114     }
 115     catch (std::exception &e)
 116     {
 117         return Err<struct layer_map>(e.what());
 118     }
 119 }
 120
 121 optional<int>
 122 layer_map::get_layer_id(int surface_id)
 123 {
 124     auto i = this->surfaces.find(surface_id);
 125     if (i != this->surfaces.end())
 126     {
 127         return optional<int>(i->second);
 128     }
 129     return nullopt;
 130 }
 131
 132 optional<int> layer_map::get_layer_id(std::string const &role)
 133 {
 134     for (auto const &r : this->roles)
 135     {
 136         auto re = std::regex(r.first);
 137         if (std::regex_match(role, re))
 138         {
 139             HMI_DEBUG("wm", "role %s matches layer %d", role.c_str(), r.second);
 140             return optional<int>(r.second);
 141         }
 142     }
 143     HMI_DEBUG("wm", "role %s does NOT match any layer", role.c_str());
 144     return nullopt;
 145 }
 146
 147 json layer::to_json() const
 148 {
 149     auto is_full = this->rect == compositor::full_rect;
 150
 151     json r{};
 152     if (is_full)
 153     {
 154         r = {{"type", "full"}};
 155     }
 156     else
 157     {
 158         r = {{"type", "rect"},
 159              {"rect",
 160               {{"x", this->rect.x},
 161                {"y", this->rect.y},
 162                {"width", this->rect.w},
 163                {"height", this->rect.h}}}};
 164     }
 165
 166     return {
 167         {"name", this->name},
 168         {"role", this->role},
 169         {"layer_id", this->layer_id},
 170         {"area", r},
 171     };
 172 }
 173
 174 json layer_map::to_json() const
 175 {
 176     json j{};
 177     for (auto const &i : this->mapping)
 178     {
 179         j.push_back(i.second.to_json());
 180     }
 181     return j;
 182 }
 183
 184 compositor::rect layer_map::getAreaSize(const std::string &area)
 185 {
 186     return area2size[area];
 187 }
 188
 189 const compositor::rect layer_map::getScaleDestRect(
 190     int to_w, int to_h, const std::string &aspect_setting)
 191 {
 192     compositor::rect rct;
 193     rct.x = 0;
 194     rct.y = 0;
 195     rct.w = to_w;
 196     rct.h = to_h;
 197     HMI_NOTICE("wm:lm",
 198                "Scaling:'%s'. Check 'fullscreen' is set.", aspect_setting.c_str());
 199     // Base is "fullscreen". Crash me if "fullscreen" is not set
 200     compositor::rect base = this->area2size.at("fullscreen");
 201     HMI_DEBUG("wm:lm", "Output size, width: %d, height: %d / fullscreen width: %d, height: %d",
 202               to_w, to_h, base.w, base.h);
 203     // If full_rct.w or full_rct.h == 0, crash me on purpose
 204     double scale_rate_w = double(to_w) / double(base.w);
 205     double scale_rate_h = double(to_h) / double(base.h);
 206     double scale;
 207     if (scale_rate_h < scale_rate_w)
 208     {
 209         scale = scale_rate_h;
 210     }
 211     else
 212     {
 213         scale = scale_rate_w;
 214     }
 215     HMI_DEBUG("wm", "set scale: %5.2f", scale);
 216
 217     // Scaling
 218     if (aspect_setting == "aspect_fit")
 219     {
 220         // offset
 221         rct.x = (to_w - scale * base.w) / 2;
 222         rct.y = (to_h - scale * base.h) / 2;
 223
 224         // scaling
 225         rct.w = base.w * scale;
 226         rct.h = base.h * scale;
 227     }
 228     else if (aspect_setting == "display_fit")
 229     {
 230         // offset is none
 231         // scaling
 232         rct.w = base.w * scale_rate_w;
 233         rct.h = base.h * scale_rate_h;
 234     }
 235     HMI_DEBUG("wm:lm", "offset x: %d, y: %d", rct.x, rct.y);
 236     HMI_DEBUG("wm:lm", "after scaling w: %d, h: %d", rct.w, rct.h);
 237     return rct;
 238 }
 239
 240 int layer_map::loadAreaDb()
 241 {
 242     HMI_DEBUG("wm:lm", "Call");
 243
 244     // Get afm application installed dir
 245     char const *afm_app_install_dir = getenv("AFM_APP_INSTALL_DIR");
 246     HMI_DEBUG("wm:lm", "afm_app_install_dir:%s", afm_app_install_dir);
 247
 248     std::string file_name;
 249     if (!afm_app_install_dir)
 250     {
 251         HMI_ERROR("wm:lm", "AFM_APP_INSTALL_DIR is not defined");
 252     }
 253     else
 254     {
 255         file_name = std::string(afm_app_install_dir) + std::string("/etc/areas.db");
 256     }
 257
 258     // Load area.db
 259     json_object *json_obj;
 260     int ret = jh::inputJsonFilie(file_name.c_str(), &json_obj);
 261     if (0 > ret)
 262     {
 263         HMI_DEBUG("wm:lm", "Could not open area.db, so use default area information");
 264         json_obj = json_tokener_parse(kDefaultAreaDb);
 265     }
 266     HMI_DEBUG("wm:lm", "json_obj dump:%s", json_object_get_string(json_obj));
 267
 268     // Perse areas
 269     HMI_DEBUG("wm:lm", "Perse areas");
 270     json_object *json_cfg;
 271     if (!json_object_object_get_ex(json_obj, "areas", &json_cfg))
 272     {
 273         HMI_ERROR("wm:lm", "Parse Error!!");
 274         return -1;
 275     }
 276
 277     int len = json_object_array_length(json_cfg);
 278     HMI_DEBUG("wm:lm", "json_cfg len:%d", len);
 279     HMI_DEBUG("wm:lm", "json_cfg dump:%s", json_object_get_string(json_cfg));
 280
 281     const char *area;
 282     for (int i = 0; i < len; i++)
 283     {
 284         json_object *json_tmp = json_object_array_get_idx(json_cfg, i);
 285         HMI_DEBUG("wm:lm", "> json_tmp dump:%s", json_object_get_string(json_tmp));
 286
 287         area = jh::getStringFromJson(json_tmp, "name");
 288         if (nullptr == area)
 289         {
 290             HMI_ERROR("wm:lm", "Parse Error!!");
 291             return -1;
 292         }
 293         HMI_DEBUG("wm:lm", "> area:%s", area);
 294
 295         json_object *json_rect;
 296         if (!json_object_object_get_ex(json_tmp, "rect", &json_rect))
 297         {
 298             HMI_ERROR("wm:lm", "Parse Error!!");
 299             return -1;
 300         }
 301         HMI_DEBUG("wm:lm", "> json_rect dump:%s", json_object_get_string(json_rect));
 302
 303         compositor::rect area_size;
 304         area_size.x = jh::getIntFromJson(json_rect, "x");
 305         area_size.y = jh::getIntFromJson(json_rect, "y");
 306         area_size.w = jh::getIntFromJson(json_rect, "w");
 307         area_size.h = jh::getIntFromJson(json_rect, "h");
 308
 309         this->area2size[area] = area_size;
 310     }
 311
 312     // Check
 313     for (auto itr = this->area2size.begin();
 314          itr != this->area2size.end(); ++itr)
 315     {
 316         HMI_DEBUG("wm:lm", "area:%s x:%d y:%d w:%d h:%d",
 317                   itr->first.c_str(), itr->second.x, itr->second.y,
 318                   itr->second.w, itr->second.h);
 319     }
 320
 321     // Release json_object
 322     json_object_put(json_obj);
 323
 324     return 0;
 325 }
 326
 327 const char* layer_map::kDefaultAreaDb = "{ \
 328     \"areas\": [ \
 329         { \
 330             \"name\": \"fullscreen\", \
 331             \"rect\": { \
 332                 \"x\": 0, \
 333                 \"y\": 0, \
 334                 \"w\": 1080, \
 335                 \"h\": 1920 \
 336             } \
 337         }, \
 338         { \
 339             \"name\": \"normal.full\", \
 340             \"rect\": { \
 341                 \"x\": 0, \
 342                 \"y\": 218, \
 343                 \"w\": 1080, \
 344                 \"h\": 1488 \
 345             } \
 346         }, \
 347         { \
 348             \"name\": \"split.main\", \
 349             \"rect\": { \
 350                 \"x\": 0, \
 351                 \"y\": 218, \
 352                 \"w\": 1080, \
 353                 \"h\": 744 \
 354             } \
 355         }, \
 356         { \
 357             \"name\": \"split.sub\", \
 358             \"rect\": { \
 359                 \"x\": 0, \
 360                 \"y\": 962, \
 361                 \"w\": 1080, \
 362                 \"h\": 744 \
 363             } \
 364         }, \
 365         { \
 366             \"name\": \"software_keyboard\", \
 367             \"rect\": { \
 368                 \"x\": 0, \
 369                 \"y\": 962, \
 370                 \"w\": 1080, \
 371                 \"h\": 744 \
 372             } \
 373         }, \
 374         { \
 375             \"name\": \"restriction.normal\", \
 376             \"rect\": { \
 377                 \"x\": 0, \
 378                 \"y\": 218, \
 379                 \"w\": 1080, \
 380                 \"h\": 1488 \
 381             } \
 382         }, \
 383         { \
 384             \"name\": \"restriction.split.main\", \
 385             \"rect\": { \
 386                 \"x\": 0, \
 387                 \"y\": 218, \
 388                 \"w\": 1080, \
 389                 \"h\": 744 \
 390             } \
 391         }, \
 392         { \
 393             \"name\": \"restriction.split.sub\", \
 394             \"rect\": { \
 395                 \"x\": 0, \
 396                 \"y\": 962, \
 397                 \"w\": 1080, \
 398                 \"h\": 744 \
 399             } \
 400         }, \
 401         { \
 402             \"name\": \"on_screen\", \
 403             \"rect\": { \
 404                 \"x\": 0, \
 405                 \"y\": 218, \
 406                 \"w\": 1080, \
 407                 \"h\": 1488 \
 408             } \
 409         } \
 410     ] \
 411 }";
 412
 413 } // namespace wm